400485 has 8 divisors (see below), whose sum is σ = 640800. Its totient is φ = 213584.

The previous prime is 400481. The next prime is 400523. The reversal of 400485 is 584004.

400485 = T₂₇₈ + T₂₇₉ + ... + T₂₈₇.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 400485 - 2² = 400481 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13335 + ... + 13364.

It is an arithmetic number, because the mean of its divisors is an integer number (80100).

2⁴⁰⁰⁴⁸⁵ is an apocalyptic number.

It is an amenable number.

400485 is a deficient number, since it is larger than the sum of its proper divisors (240315).

400485 is a wasteful number, since it uses less digits than its factorization.

400485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26707.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 400485 is about 632.8388420443. The cubic root of 400485 is about 73.7103971997.

Adding to 400485 its reverse (584004), we get a palindrome (984489).

The spelling of 400485 in words is "four hundred thousand, four hundred eighty-five".